Post B6yNvKDwtW6vpEj0RU by mntmn@mastodon.social
 (DIR) More posts by mntmn@mastodon.social
 (DIR) Post #B6yNvG9C3FvjBKT9TU by mntmn@mastodon.social
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       today i was able to achieve 0.56W suspend power draw on Quasar QCS6490 Pocket Reform with the keyboard unplugged and internal usb hub unpowered. that's up to around 50 hours of suspend-to-ram on the default 2x4000mAh batteries if i'm not mistaken.
       
 (DIR) Post #B6yNvHVYzZPzOzwWyu by matt@toot.cafe
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       @mntmn Congrats. How quickly can it wake from that suspended state? Do you know what your power draw is in that same keyboard/USB configuration but the CPU at near idle, like, only one core powered on (if that's possible) and at its lowest clock speed?
       
 (DIR) Post #B6yNvICSQ5jHY20mq8 by mntmn@mastodon.social
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       a surprise was the 800mW power draw of the TUSB8041 usb hub btw. it was worth it to integrate a power switch for it on the mb2.0.
       
 (DIR) Post #B6yNvIDANSIRaELLwe by mntmn@mastodon.social
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       wish i could afford a joulescope atm...
       
 (DIR) Post #B6yNvIJC137JsvAAL2 by mntmn@mastodon.social
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       @matt it takes around 3 seconds to resume
       
 (DIR) Post #B6yNvJfCygK05UTGIC by mntmn@mastodon.social
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       @matt with all 8 cores online but on console and usb hub, display turned off, power consumption is around 2.5W
       
 (DIR) Post #B6yNvKDwtW6vpEj0RU by mntmn@mastodon.social
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       @matt ah, wifi and bt were still on. when turning them off with rfkill, 1.9W
       
 (DIR) Post #B6yOOf3YWFcCpkqtHc by gsuberland@chaos.social
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       @mntmn !??nearly a watt of draw just to... what?
       
 (DIR) Post #B6yOOfVuooIgFi7XUG by mntmn@mastodon.social
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       @gsuberland no idea, keep usb superspeed engines running?
       
 (DIR) Post #B6yOOfohgxKTByuXlw by gsuberland@chaos.social
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       @mntmn kinda wild amount of juice!
       
 (DIR) Post #B6yOOgFI66b2WRLmDI by mntmn@mastodon.social
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       @gsuberland interesting, someone else ran into basically exactly that figure but it wasn't resolved in that thread https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1585452/tusb8041-power-consumption-clarification
       
 (DIR) Post #B6zu4v5AQy5oo0OnLc by gsuberland@chaos.social
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       @mntmn weird. silicon bug maybe?